Fluid control device



Aug. 29, 1939. A. F.-P|EPER FLUID CONTROL DEVICE Filed Feb. 5, 1957 2 Sheets-Sheet l TOR.

'7z z s ATTORNEYS A. F. PIEPER 2,171,292

mum common nzmca Filed Feb. :5, 193'? 2 Sheets-Sheet 2 IN VENTOR w w M %Z'$ATTORNEYS Patented Aug. 29, 1939 UNITED STATES PATENT OFFICE FLUID CONTROL DEVICE Alphonse F. Pieper, Brighton, N. Y. v Application February 3, 1937, Serial No. 123,781

. '7 Claims. (01. 128-224) The present invention relates to a fluid control The same reference numerals throughout the device such, for example, as a syringe and has several views indicate the same parts. for its object to provide in a device of this class The present syringe is of the class adapted for combined structural units which can be readily connection with a liquid or fluid supply source assembled and separated from time to time to under pressure and in which the injection of the 5 permit one or more of the units to be sterilized liquid or fluid is effected by the pressure in the when desired and which when connected coopersystem, the syringe being adapted for connection ate to afford an eflicient and dependable fluid with either a warm or cold water supply source. control device for the purpose intended. Referring to the drawings, the syringe com- A further object of the invention is to provide prises a body portion designated generally by the 10 in a syringe of the present type an improved reference numeral l0 and includes a casing ll arrangement of parts by which the construction having a recessed head I2 on its outer end prois simplified and the cost of manufacture revided with any suitable type of nozzle such, for duced. example, as the tube 13 connected with the head 15 A further object of the invention is to provide by a suitable coupling I l. The head is provided 16 a syringe including a casing having a nozzle with a passage I5 within which is screwed the thereon and a complete detachable interiorly disouter end of a relatively short tube or tubular posed unit for delivering fluid to the nozzle, insection It in free communication with the nozzle eluding relatively movable parts for controlling and disposed within the recess I211 of the head, as

the flow of the fluid. shown in Fig. 1. 20

A further object of the invention is to provide Screwed on or otherwise secured upon the inin a syringe of the class described a casing havner end of the casing is a support I! for the reing a rotary withdrawable fluid supply unit theremovable unit 18 disposed within the casing for in, comprising relatively movable sections and delivering fluid to the nozzle through the tube 16.

2| valve means actuated by effecting relative move- The removable unit includes a plurality of tubument between the sections by the use of suitable lar sections such, for example, as the relatively operating means on the casing, and in which armovable outer and inner sections l9 and 20, rerangement improved means is provided for re- Spectively. The inner unitary section 20 is prefertaining the unit within the casing which can ably formed of three suitably connected parts or be quickly and conveniently released without the members comprising the inner and outer mem- 30 use of tools to free the unit for withdrawal from bers 2| and 22 and the intermediate member 22a, the casing. Figs. 5 and 6, the inner member being preferably To these and other ends the invention resides screwed upo t e intermediate m be and he in certain improvements and combinations of outer member secured upon the intermediate parts, all as will be hereinafter more fully demember by means of the screws 23. The inter- 35 scribed, the novel features being pointed out in mediate member 22a is provided with a recess 24 the daims 't end f t pecification communicating with a bore 25 within which is In t drawings; secured the inner end of a tube 26, the outer end Figs. 1 and 2 constitute longitudinal sections of which extends Within the 9 of the through a syringe embodying one form of the intllbular Sectlon as shown In Thlls 40 vention; W111 be seen tli gt the dietachable tglblfialdlilnlt l (81 is rovided wi a con inuous cen ra y spose Fig 3 1s a fragmentary part sectlonal elevat on fi passage therethrough for the delivery of showing the stop collar for the valve operating 1 t the fluid or liquid to the nozzle through the relaever 1 1 erent p051 Ion from that tively short tube l6 fixed upon the casing.

m f The means for controlling the flow of the fluid Fig. 4 1s a long1tud1nal section of the casing through said tubular unit comprises a valve 28 shown in Figs. 1 and 2 wlth the inner tubular unit normally closing the bore 25 of the member 22a removed therefrom? and having a tapered portion 29 extending within 5 Fig. 5 s a View Of the detachable tubular unit said bore to afford a gradual increase in the flow Shown removed from the casing; of the fluid when moving the valve to full open Fig. 6 is a view of the unit shown in Fig. 5 position. The valve isprovided with a holder 30 looking from the right thereof, and in engagement with which is a spring 3| for Fig. 7 is a transverse section on line l---'! of normally maintaining the valve in closed position. The spring is preferably supported within 55 the recess 24 by a member 32 threaded therein and having an opening 32a for the passage of the fluid thereto.

The fluid is delivered to the recess through a suitable coupling 33 threaded within the intermediate portion 220. of the tubular section 20, the coupling having a reduced portion 33a. for the reception of a flexible supply tube or conduit 34 adapted for connection with any suitable liquid or fluid supply source, not shown.

The valve is provided with an operating stem 35 which extends through the tubular member 26 and into the bore 21 of the outer tubular section I9, the stem having an enlarged portion 35 thereon, as shown in Fig. 1. A tubular valve actuating member 31 is threaded within the central portion of the outer tubular section, I9 and extends into the bore 21 of said section for en-' gagement by the enlarged portion 36 of the valve stem upon movement of the section I9 inwardly of the casing II to the position shown in Fig. 3 whereby to efiect opening of the valve. Adjustment of the valve actuating member 31 to regulate the extent of the movement of the valve can be readily effected by inserting a screwdriver within the bore 2'! and using it to turn the actuating member to vary the distance between the latter and the part 36 of the valve stem as may be required.

A spring 38 surrounding the tube 26 serves to normally maintain the tubular section I9 at its outermost position at which it is held by engagement of the heads of the screws 39 thereon with the walls of the outer member 22 of the detachable section 20, the heads of the screws engaging said member within the slots 40 formed therein, as shown in Fig. 1, and being movable within the slots upon inward movement of the section to the position shown in Fig. 3 for the purpose of opening the valve.

Suitable packing 4| is disposed within the recesses formed in the opposite ends of the tubular section I 9 for insuring liquid-tight joints between said section and the tubes I6 and 26 telescoped within the section, the packing being compressed and held in position by the members 42 threaded within the opposite ends of the section, as shown in Fig. 1.

Means for moving the section I9 to effect opening of the valve preferably comprises a finger lever 43 having its lower end disposed between the ends 44 of a band 45 which is clamped upon the tubular casing II by means of a bolt or pin 46 forming a pivot upon which the lever is adapted to swing. The lever carries a lateral projection 41 extending through an opening 48 in the wall of the casing II and engaging a shoulder or cam 49 on the tubular section, with the result that when the lever is swung inwardly toward the casing from the position shown in Fig. 1 the tubular section will be moved inwardly of the casing to effect opening of the valve, the section being returned to normal position by the spring 38 upon releasing the lever. Normally the extent of the inward movement of the section I9 and the resulting movement of the valve is limited bythe contacting of the portion 43a of the lever with a collar 58 on the casing I I when the collar is in the position shown in Fig. 1. The collar, however, is threaded upon a ring 5| fixed on the casing so that the collar may be adjusted by rotation from the position shown in Fig. 1 to that shown in Fig. 3 when it is desired to open the valve to the full extent to obtain a maximum flow of the liquid through the nozzle, the ring being cut away at 52 to allow for an increase of the movement of the lever and a consequent increase in the movement of the tubular section I9 and the valve operating stem 35.

The means for holding or maintaining the detachable unit I8 within the casing II preferably comprises a resilient element 53 in the form of a leaf spring disposed within a groove 54 formed in the wall of the innermost member ZI of the unit, the spring being secured within the groove by a screw 55 extending within the wall of the member 2|, Fig. 2. Application of the screw can be effected by the use of a screw driver which may be inserted through an opening 56 in the wall of said member to engage and turn the screw. The opposite end of the spring is provided with a laterally projecting locking part 5! extending through an opening 58 in the wall of the member 2I and into an annular groove 59 formed in the wall of the supporting member I! which affords a track-like shoulder 60 on which the part 51 is adapted to rest and by which the detachable unit I8 is supported within the casing. Secured on the spring 53 between the ends thereof is an operating button or member GI which extends through an opening 62 in the wall of the member 20, as shown in Fig. 2. By pressing inwardly on the button with the thumb or finger the locking part 51 can be moved inwardly and out of engagement with the shoulder 60 thereby releasing the detachable unit I8 for withdrawal from the casing, thus freeing the latter for insertion within a suitable sterilizer in which not only the casing will be sterilized but likewise the operating lever, the nozzle, and other parts attached to the casing.

It will be noted that the free end of the support I! is provided with an inner beveled or cam face 63 on which the locking member 51 will ride when moving the tubular unit I8 into final position within the casing and by which said looking member will be moved inwardly under the tension of the spring 53 which will serve to snap the locking member into the groove 59 when it clears the cam face 63.

Furthermore, by making the groove and cam face continuous, the unit I8 can be readily moved to final position within the casing without having to rotate it therein to move the locking member to any particular position relative to the support IT.

The support I! being threaded on the casing I I can readily be adjusted longitudinally thereof to position the track 89 in proper position to receive the locking member 51 which is urged into engagement with the track by the pressure of the spring 38. After the support has been adjusted to the desired position on the casing it can be secured in said position against turning by a set screw 65, the inner end of which contacts the inner end of the casing II, as shown in Fig. 2.

It will be seen that all that is required to condition the inner tubular unit I8 for removal from the casing II is to push the button BI inwardly to effect release of the locking member 51, after which the unit can be readily withdrawn from the casing, this being done without having to remove the operating lever 43 from the casing, since the reduced outer end of the tubular section I9 will not be obstructed by the part 4! of the lever which normally engages the inclined shoulder 49 of the section.

Furthermore the proper positioning of the unit I8 Within the casing requires merely the simple operation of inserting it therein and moving it longitudinally thereof until the locking part 5! is opposite the groove 59 at which time said part will be snapped into the groove by the spring 53.

It will be understood that when moving the unit l8 into position Within the casing that it will be guided by the walls of the latter and that the outer end of the section !9 will become telescoped upon the tube or section it disposed within and fixed relative to the casing.

By mounting the unit ill for a rotary or swiveling movement within the casing H the trouble ordinarily experienced by the flexible supply conduit becoming kinked or twisted when in use can readily be overcome merely by rotating the unit to remove the kinks, thus making it unnecessary to have to detach the supply conduit from the unit or to remove any of the parts of the latter.

It will be understood that in rotating the unit I8 within the casing that the inclined annular shoulder 49 of the outer tubular section l9 will be free to move in engagement with the inwardly projecting portion 41 of the lever 43 which will in no way interfere with the rotation of the unit.

It will be noted that the rotary unit l8 constitutes in effect a single tube having a continuous axially disposed passage therethrough for discharging the fluid or liquid to the nozzle, under the control of the valve. Furthermore, it will be seen that the syringe is formed of two complete self-contained units made readily separable merely by movement of a single part conveniently located on the syringe for operation by the pressure of the finger to release position, and in which construction the units can be assembled for use merely by the insertion of one within another.

It is apparent from the disclosure and the description of the syringe that the invention comprises an exceedingly convenient and practical instrument, and that the ready detachability of the units one from another contributes to avoidance of delay in assembling and disconnecting the same, which is particularly advantageous where it is desired or found necessary to separate and sterilize one or both of the units from time to time.

I claim:

1. In a syringe, a casting having a nozzle, a unit mounted within the casing independently of the nozzle and having a longitudinally extending passage for delivering the fluid to the nozzle, said unit being withdrawable from the casing and including relatively movable sections having an actuating part within the fluid passage operable by movement of one of the sections relative to another, valve means for controlling said passage responsive to said actuating part, and a releasable locking element interposed between the casing and the unit for retaining the latter within the casing, said locking element having an operating part disposed within an opening in the wall of the unit and operable through the opening to efiect release of the locking element.

2 In a syringe, a casing having a nozzle thereon at its outer end, a tubular unit within the casing comprising inner and outer communieating sections, said outer section communicating with the nozzle and being enclosed within the casing and movable longitudinally therein and relative to the inner section, valve means within the casing normally closing the inner section, said valve means being operated by movement of the outer section longitudinally within the casing in one direction, and means on the casing for moving the outer section longitudinally therein, said inner and outer sections and said valve means being removable from the casing as a unit through the inner end thereof.

3. In a syringe, a casing having a nozzle, a tubular unit rotatably mounted within the casing and comprising relatively movable sections for delivering fluid to the nozzle, valve means for controlling the flow of the fluid operated by effecting relative movement between the sections, one of said sections having an annular portion thereon, and a lever pivotally mounted on the casing and having a part projecting therein and adapted to engage said portion during rotation of the unit and to cooperate with said portion to effect relative movement between said sections upon movement of the lever in one direction, said unit being withdrawable from the casing with the lever in normal position upon the casing.

4. In a syringe, a casing having a nozzle, a tubular unit within the casing comprising relatively movable tubular sections for delivering fluid to the nozzle, said unit including valve means for controlling the flow of the fluid through the sections, means on the casing for moving one of the sections relative to another to effect operation of the valve means, said unit being withdrawable from the casing, and locking means for the unit including cooperating parts on the unit and the casing, one of which is resiliently mounted for movement automatically into engagement with the other, said locking part being releasable from the exteriorv of the casing to free the unit for withdrawal from the casing.

5. In a syringe, a casing having a nozzle, a unit within the casing for delivering fluid to the nozzle, comprising tubular sections one movable within the casing longitudinally of the other and having a shoulder intermediate its ends, valve means for controlling the flow of the fluid through said tubular sections responsive to said movable section when moving it to a predetermined position withinthe casing, operating means movable on the casing and having a part for cooperation with said shoulder to effect movement of the last mentioned section to said predetermined position, said unit being withdrawable from the casing through one end thereof, and means supporting the unit for rotation within the casing and relative to the part for actuating said movable section.

6. A dental hand instrument comprising the combination of a casing member and a tubular member telescopically mounted in said casing member said tubular member including a valve, means for coupling the casing member and tubular member together comprising quickly releasable locking parts between said casing member and tubular member, and a valve operating element extending through the casing member from the outside thereof and into engagement with the valve, said parts and said valve being so constructed and arranged that the casing member and the tubular member may be telescopically assembled when the members are in any axial relation with each other and the valve actuated when the members are in any such axial relation. a

7. A dental hand instrument comprising the combination. of a casing member and a tubular member telescopically and rotatably mounted in said casing member, a valve carried by said tubular member for controlling the flow of fluid therequickly releasable locking parts between said casing member and tubular member, said parts being so constructed and arranged that the tubular member may freely rotate in the casing member to thereby enable the members to be assembled telescopically when the members are in any axial relation with respect to each other.

ALPHONSE F. PIEPER.

- CERTIFICATE OF CORRECTION. Patent No. 2,171,292. August 29, 19 9.

ALPHONSE F. PIEPER. It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5 first column, line 51: claim 1, for-the word "casting" read casing; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 26th day of September, A. D. 1959 Henry'Van Arsdale (Seal) Acting Commissioner of Patents. 

